Flash: Transmission Control Module (TCM) Updates
Ram technical service bulletin 21-042-19 for 2020 Ram 1500.
- Bulletin number
- 21-042-19
- Component
- Electrical system
- Summary
- Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience the following:Harsh 3-2 downshift. Harsh 1-2 and 2-3 upshifts when cold. 4-5 shift clunk.
Owners of these vehicles have filed 167 complaints in the electrical category.
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